CN219337612U

CN219337612U - Brake return spring assembly and disassembly tools

Info

Publication number: CN219337612U
Application number: CN202223361566.6U
Authority: CN
Inventors: 董哲; 董志明; 宋黎明; 杨哲; 兰天辉
Original assignee: Inner Mongolia North Hauler JSCL
Current assignee: Inner Mongolia North Hauler JSCL
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-07-14
Anticipated expiration: 2032-12-12

Abstract

The utility model discloses a brake return spring dismounting tool, which comprises: lever mechanism, tool screw, connecting bolt, lever mechanism includes: the device comprises a base, a force application lever and a nail puller, wherein the top of the base is provided with a hinge lug which is provided with a hinge through hole; the front end of the force application lever is provided with a first lever through hole and a second lever through hole; the nail puller is connected to the front part of the base, the upper part is provided with a nail puller through hole, and the lower part is provided with a nail puller groove; the connecting bolt passes through the second lever through hole and the hinged through hole and is fixed by a nut, and the connecting bolt passes through the first lever through hole and the nail puller through hole and is fixed by a nut; the lower part of the tool screw is provided with external threads, the top is provided with an end cap, the tool screw is positioned in the nail-lifting groove, and the end cap is positioned on the upper part of the nail-lifting groove. The utility model has good spring dismounting or mounting effect, can bear larger spring force, and has high spring dismounting or mounting efficiency.

Description

Brake return spring assembly and disassembly tools

Technical Field

The utility model belongs to maintenance tools of mining vehicles, and particularly relates to a brake return spring dismounting tool.

Background

The braking principle of the off-highway mining dump truck brake is generally divided into two types, namely hydraulic implementation, spring release, spring implementation and hydraulic release. In either braking type, a return spring is provided for applying the brakes when the mining vehicle is parked or releasing the brakes as needed when the mining vehicle is traveling normally.

The spring of the brake is mostly installed in the piston housing of the piston, and a special pin is penetrated in the spring body of the spring for realizing the installation and fixation of the spring. The special pin is tensioned and locked in the groove of the piston shell under the action of the pre-tightening force of the spring. Because the elasticity of the spring is stronger, the pretightening force of the spring is larger, and the spring is very difficult to assemble and disassemble from the groove of the piston shell.

Disclosure of Invention

The utility model aims to provide a brake return spring dismounting tool which has good spring dismounting or mounting effect, can bear larger spring force and has high spring dismounting or mounting efficiency.

In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

brake return spring assembly and disassembly tools includes: lever mechanism, tool screw, connecting bolt, lever mechanism includes: the device comprises a base, a force application lever and a nail puller, wherein the top of the base is provided with a hinge lug which is provided with a hinge through hole; the front end of the force application lever is provided with a first lever through hole and a second lever through hole; the nail puller is connected to the front part of the base, the upper part is provided with a nail puller through hole, and the lower part is provided with a nail puller groove; the connecting bolt penetrates through the second lever through hole and the hinge through hole and is fixed by a nut, and the force application lever is hinged with the hinge lug; the connecting bolt penetrates through the first lever through hole and the nail puller through hole and is fixed by a nut, and the force application lever is hinged with the nail puller; the lower part of the tool screw is provided with external threads, the top is provided with an end cap, the tool screw is positioned in the nail-lifting groove, and the end cap is positioned on the upper part of the nail-lifting groove.

Further, the first lever through hole is located at the front of the second lever through hole.

Further, the bottom of base is provided with the backup pad, and articulated ear is provided with two otic placodes, and articulated through-hole sets up respectively on two otic placodes, and the second lever through-hole is located between two articulated through-holes.

Further, the nail puller includes: the bottom of two risers is connected at the top of bottom plate respectively, and two nail puller through-holes set up respectively in the upper portion of two risers, and the nail-lifting groove sets up on the bottom plate and is located between two risers, and the bottom plate is connected with the backup pad, and the nail-lifting groove is located the backup pad front portion.

Further, the first lever through hole is located between the two staple remover through holes.

Further, the opening of the nail nipping groove is positioned at the front end of the bottom plate.

Further, a hexagonal mounting counter bore is formed in the top of the end cap.

The technical effects of the utility model include:

1. the utility model has simple structure, strong practicability and ingenious structure.

2. The utility model has good spring dismounting effect and can bear larger spring force.

3. The utility model has the advantages of convenient use, strong operability and practicability, and the like, is convenient for disassembling and assembling the piston and the spring in the piston shell, has high disassembling and assembling efficiency of the spring, and can save a great deal of manpower.

Drawings

FIG. 1 is a schematic view of a brake return spring assembly and disassembly tool according to the present utility model;

FIG. 2 is an enlarged view of FIG. 1 at I;

FIG. 3 is a schematic view of the structure of the spring-specific pin of the present utility model;

FIG. 4 is a view of the brake return spring assembly and disassembly tool of the present utility model in use;

fig. 5 is a cross-sectional view taken along A-A in fig. 4.

Detailed Description

The following description fully illustrates the specific embodiments of the utility model to enable those skilled in the art to practice and reproduce it.

FIG. 1 is a schematic view of a brake return spring assembly and disassembly tool according to the present utility model; as shown in fig. 2, an enlarged view at I in fig. 1; as shown in fig. 3, the spring-dedicated pin 2 according to the present utility model is schematically structured.

Brake return spring assembly and disassembly tools includes: a lever mechanism 1, a tool screw 4 and a connecting bolt 5. The lever mechanism 1 includes: the device comprises a base 11, a force application lever 12 and a nail puller 13, wherein a hinge lug 112 is arranged at the top of the base 11, and a hinge through hole is formed in the hinge lug 112; the front end of the force application lever 12 is provided with a first lever through hole and a second lever through hole; the nail puller 13 is connected to the front part of the base 11, the upper part is provided with a nail puller through hole, and the lower part is provided with a nail puller groove 14; the connecting bolt 5 passes through the second lever through hole and the hinge through hole and is fixed by a nut, so that the force application lever 12 is hinged with the hinge lug 112; the connecting bolt 5 passes through the first lever through hole and the nail puller through hole and is fixed by a nut, and the force application lever 12 is hinged with the nail puller 13; the lower part of the tool screw 4 is provided with an external thread, the top part is provided with an end cap 41, the tool screw 4 is positioned in the nail-lifting groove 14, and the end cap 41 is positioned at the upper part of the nail-lifting groove 14.

The force arm of the force application lever 12 is long, and can easily bear large spring force. The staple groove 14 is used to engage the end cap 41 of the tool screw 4. The force application lever 12 has a first lever through hole located in front of a second lever through hole.

The bottom of the base 11 is provided with a support plate 111 for reducing the pressure of the lower portion of the base 11 against the support object. The top of the end cap 41 is provided with a hex mounting counterbore 42.

The hinge lug 112 is provided with two lug plates, the hinge through holes are respectively arranged on the two lug plates, and the second lever through hole is positioned between the two hinge through holes.

The nail puller 13 includes: the bottom plate, riser, the top at the bottom of bottom plate is connected respectively to the bottom of two risers, and two nail puller through-holes set up respectively in the upper portion of two risers, and nail nipping groove 14 sets up on the bottom plate and is located between two risers, and the bottom plate is connected with backup pad 111, and nail nipping groove 14 is located the backup pad 111 front portion. The first lever through hole is located between the two staple remover through holes. The openings of the staple pockets 14 are located at the front end of the bottom plate.

When the spring is attached and detached, the stopper pin 3 needs to be mounted in the stopper pin hole 23 or removed from the stopper pin hole 23. The bottom of the spring special pin 2 is provided with a stop step 22, the upper side wall is provided with a stop pin hole 23, a threaded blind hole 21 is formed in the top of the spring special pin 2 for being matched with a brake return spring dismounting tool, and the lower part of the tool screw 4 is connected to the threaded blind hole 21 in a threaded mode. The retaining step 22 is used for limiting the axial movement of the spring 5, and the retaining pin 3 is used for bearing the return pretightening force of the spring 5; the blind threaded bore 21 is used for mounting the tool screw 4 for use by the nail puller 13.

FIG. 4 is a view showing the state of use of the brake return spring removing tool of the present utility model; as shown in fig. 5, is a cross-sectional view taken along the direction A-A in fig. 4.

The application method of the brake return spring dismounting tool comprises the following specific steps:

step 1: when the spring 5 is required to be installed in the piston housing groove 71 of the piston 7, the spring 5 is sleeved on the spring special pin 2, the spring special pin 2 and the spring 5 are inserted from the bottom opening of the piston housing groove 71, the top of the spring 5 is abutted against the end part of the piston step hole at the upper part of the piston housing groove 71, the spring special pin 2 extends out of the step hole into the housing hole 61 of the piston housing 6, and the housing step hole is arranged in the housing hole 61;

step 2: the tool screw 4 is connected to the threaded blind hole 21 at the top of the spring special pin 2, the lever mechanism 1 is placed in the shell Kong Cebu, the tool screw 4 is installed in the nail-lifting groove 14 of the nail-lifting device 13, and the end cap 41 is positioned at the upper part of the nail-lifting groove 14; pressing the force application lever 12, the nail puller 13 pulls up the spring special pin 2, the stop step 22 at the bottom of the spring special pin 2 compresses the spring 5, and the stop pin 3 is installed in the stop pin hole 23 when the stop pin hole 23 of the spring special pin 2 moves to the upper part of the shell hole 61; releasing the force application lever 12, removing the lever mechanism 1, moving the special spring pin 2 downwards, clamping the stop pin 3 at the top of the step hole of the shell, detaching the tool screw 4, completing the installation of the spring 5, and ensuring that the spring 5 is in a pre-tightening state;

step 3: when the spring 5 is required to be detached from the piston housing groove 71 of the piston 7, the tool screw 4 is connected to the threaded blind hole 21, the lever mechanism 1 is placed in the housing Kong Cebu, the tool screw 4 is mounted in the nail-lifting groove 14, and the end cap 41 is positioned at the upper part of the nail-lifting groove 14;

step 4: pressing the force applying lever 12, the nail puller 13 pulls up the spring special pin 2, the stop step 22 compresses the spring 5, and the stop pin 3 is pulled out from the stop pin hole 23 when the stop pin 3 moves to the upper part of the shell hole 61; releasing the force application lever 12, removing the spring-dedicated pin 2 and the spring 5 from the piston housing groove 71, and removing the spring 5 and the tool screw 4 to complete the removal of the spring 5.

The terminology used herein is for the purpose of description and illustration only and is not intended to be limiting. As the present utility model may be embodied in several forms without departing from the spirit or essential attributes thereof, it should be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the metes and bounds of the claims, or equivalences of such metes and bounds are therefore intended to be embraced by the appended claims.

Claims

1. A brake return spring removal tool, comprising: lever mechanism, tool screw, connecting bolt, lever mechanism includes: the device comprises a base, a force application lever and a nail puller, wherein the top of the base is provided with a hinge lug which is provided with a hinge through hole; the front end of the force application lever is provided with a first lever through hole and a second lever through hole; the nail puller is connected to the front part of the base, the upper part is provided with a nail puller through hole, and the lower part is provided with a nail puller groove; the connecting bolt penetrates through the second lever through hole and the hinge through hole and is fixed by a nut, and the force application lever is hinged with the hinge lug; the connecting bolt penetrates through the first lever through hole and the nail puller through hole and is fixed by a nut, and the force application lever is hinged with the nail puller; the lower part of the tool screw is provided with external threads, the top is provided with an end cap, the tool screw is positioned in the nail-lifting groove, and the end cap is positioned on the upper part of the nail-lifting groove.

2. The brake return spring removal tool of claim 1 wherein the first lever through hole is located forward of the second lever through hole.

3. The brake return spring removing and installing tool according to claim 1, wherein the bottom of the base is provided with a support plate, the hinge lug is provided with two lug plates, the hinge through holes are respectively provided on the two lug plates, and the second lever through hole is located between the two hinge through holes.

4. A brake return spring removal tool as defined in claim 3, wherein the staple remover comprises: the bottom of two risers is connected at the top of bottom plate respectively, and two nail puller through-holes set up respectively in the upper portion of two risers, and the nail-lifting groove sets up on the bottom plate and is located between two risers, and the bottom plate is connected with the backup pad, and the nail-lifting groove is located the backup pad front portion.

5. The brake return spring assembly and disassembly tool of claim 4 wherein the first lever through hole is located between the two staple remover through holes.

6. The brake return spring assembly and disassembly tool of claim 4 wherein the opening of the nail nipping groove is located at the front end of the base plate.

7. The brake return spring removal tool of claim 1 wherein the top of the end cap is provided with a hex mounting counterbore.